Lrtzizy 2Pcs Adjustable and Breathable Replacement Armband Soft Strap Band for Heart Rate Monitor - (Black+ Green)

4.The arm band is made of material. Fully washable. 3. replacement Strap is very soft, breathable, sweatproof and . Easy to install and remove, use as simply as the arm band.The band's Material is tough and soft make you can't feel it. Feature: 1.Designed to work as a ANT+, Bluetooth armband replacement is perfectly compatible with most popular heart rate monitor and sensor , , , , and more heart rate monitor armband. 2. armband replacement width is 20 mm, length is 400mm/15.7 inch. Wearing size between 7.5 inch-13 inch(19-33cm). The comfortable, stretchy, and adjustable band can be worn on the forearm, biceps, or triceps. 5.Nylon Buckle design provide a snug fit especially suitable for running, swimming, yoga, cycling outdoor sports and home workout.